Home / 209,322.20-313,886.10-90,932.60

Finding the Fourth Proportional to 209,322.20, 313,886.10 and 90,932.60

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Solution

The fourth proportional to 209,322.20, 313,886.10 and 90,932.60 is: 136,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,322.20 : 313,886.10 = 90,932.60 : x
  2. Step 2: Convert to fraction form
    209,322.20/313,886.10 = 90,932.60/x
  3. Step 3: Cross multiply
    209,322.20x = 313,886.10 × 90,932.60
  4. Step 4: Simplify right side
    209,322.20x = 28,542,479,176.86
  5. Step 5: Solve for x
    x = 28,542,479,176.86/209,322.20
  6. Step 6: Final answer
    x = 136,356.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.